Arabidopsis as a Model Organism By: Group 5 Allison, Leah, Mesha, and Hunter

Arabidopsis Advantages Easy and inexpensive to grow Able to sufficiently grow in small places fairly small, only reaching about 25cm Grows quickly, having a life cycle of about 6-8 weeks Large variety of ecotypes

Disadvantages of Arabidopsis Since the genotypes are so similar, it is hard to distinguish the phenotypes unrecognizable mutations Pests are attracted to these plants Agar can get very contaminated by Fungi

Vocabulary Genotypes- an exact genetic description dealing with a single trait or with a larger set of traits Phenotype- observable properties dealing with genetic and environmental factors Mutation- detectable, heritable change in genetic material which is not a result of recombination

Quick Flower Growth and Production Increased photoperiod allows the seeds to grow and sprout faster The best growth comes when the temperature is between 22-23⁰C

The Purpose of a Flower Flowers are reproductive shoots of flowering plant sporophytes – Sporophytes: Spore producing plant bodies that grow by mitotic cell divisions from a fertilizing egg

Components of a Flower Stamens: Male reproductive structures of floral shoots – Consist of an anther at the tip of a thin filament Inside a typical anther are 2-6 pairs of pouches called pollen sacs Pollen grains: spore structures that contain the male gametophytes Gametophytes: structures in which male and female haploid gametes form

Components of a Flower Cont. Carpels: female reproductive parts of floral – Upper Region: a sticky or hair like stigma – Lower Region: a chamber in which one or more ovules form and eggs are fertilized Ovule: A structure in which haploid egg-producing female gametophytes form Pollination Vectors: any agents that deliver pollen grains to structure the house female gametophyte

Works Cited Kipp, E. Heat Stress Effects on Growth and Development in Three Ecotypes of Varying Latitude of Arabidopsis. Pace University Department of Biology and Health Sciences. Sadava, David, David Hillis, William K. Purves, H. C. Heller, and Gordon H. Orians. Life : The Science of Biology. 8th ed. Boston: W. H. Freeman & Company, Arabidopsis.org Arabidopsis Lab Manual